bobbin
noun [ C ] uk/ˈbɒb.ɪn/ us/ˈbɑː.bɪn/
(FOR THREAD)
（常指放入缝纫机的）绕线筒，线轴
a small round or tube-shaped object around which thread is put, often to go in a sewing machine
（缝纫机等的）线轴，绕线筒
a round or tube-shaped object around which something such as thread, wire, or fibre is put in industrial machines